Answers
If the order of expression of the highlighted Hox gene was disrupted, moved, or changed by mutation, it would cause the replacement of a part of the body by a structure whose normal location would correspond to another site.
The differentiation of the limbs occurs during embryogenesis, thanks to the action of a group of specialized genes, called Hox gene.
This gene is involved in the developmental program that determines the location of organs along the anteroposterior axis.
These subdivide the embryo along the head-tail axis into cell fields with different developmental potentials, which will transform into limbs and other structures.
Hox gene mutations thus show that there are genes that can control the different regions of the genome that determine the structures of an organism.
These produce considerable anatomical transformations that, in the case of the fly, can consist of:
The formation of wings instead of halteres or legs.An extra pair of wings where small appendages called stabilizers would normally be.Therefore, we can conclude that if the order of expression of the Hox gene was disrupted, moved, or changed by mutation, it would cause the structures normally found in one body segment of the fly to be replaced by found in another segment.
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Related Questions
1.) A swollen guard cell is called
2.) A flat guard cell is called
Answers
Swollen =Turgid
Flat =Flaccid
When the two guard cells are turgid (swollen with water), the stoma is open, and, when the two guard cells are flaccid, it is closed.
Which characteristic helps grasses survive dry conditions?
long, flexible stems
long, skinny leaves
small, soft flowers
deep roots
Answers
answer: deep roots. hop u do good on ur test guys
Which does not occur at the continental margin in the Pacific Ocean?
1. widened margins
2. volcanic activity
3. earthquakes
4. plate interactions
Answers
Answer:
Widen Margins occurs at the continental margin in the pacific ocean, so the answer is:
1. Widened Margins.
27. What substance is a liquid at -200 °C?
carbon
phosphorus
xenon
arsenic
nitrogen
Answers
Answer:
its nitrogen..........
PLSSS IM BEGGING
Where do producers get energy to make sugars?
The air
The sun
Their food
The soil
Answers
Fruit color in a particular plant is controlled by a set of three quantitative traits that work in an equal and additive manner. Each trait has two alleles (i.e., A and a); each allele represented by a capital letter produces one dose of yellow pigment, while alleles represented with lower case letters do not produce any pigment at all. How many different shades of yellow fruit color are there
Answers
Answer:
7
Explanation:
The number of distinct shades of fruit color would be 7. It is given that the color is dominated by a group of three QTL(quantitative traits) with each trait having two alleles(A,a). Out of these two alleles, one represented by a capital letter(A) generates a single dose of yellow pigment while the latter represented by a smaller case letter(a) does not generate any pigment. Since there is no environmental effect, the number of various yellow shades would be 7 through the combinations of yellow and colorless pigments(A/a, A/a, A/a, A).
Allergies, asthma, high blood pressure, and heart
disease are examples of conditions caused by
Answers
Answer:
pollen sorry
Explanation:
i only did this for the points but the real answer is:
Children with allergies, asthma may be at risk of heart problems, with an increased risk of developing high blood pressure, high cholesterol, and obesity. In addition, eczema, a condition that causes itchy, inflamed skin, was common to asthma. here you go! Have a great day!
is the above cell a plant cell or animal cell? provide two observable
Answers
Explanation:
you have not showed the cell..please
lest 5 Adaptation to oxygen up take for mounting climbers
Answers
Many of the DD-amino acids found in nature have been discovered in bacterially produced peptides that have antibiotic properties.
a. True
b. False
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Answer:
True
Explanation:
Most the amino acid are of L configuration. Antimicrobial peptides consists of D amino acids (D amino acid occur naturally). D amino acids are also found in walls of microorganism. Antimicrobial peptides is released by species including bacteria, fungi etc.
For example - Bacteriocin, peptaibols, plectasin etc.
Hence the given statement is true
3. The Amazonian rain forest is a captivating natural habitat rich in wildlife diversity. Around 3600 different spider species inhabit the area and one of these species of the Laluca lokita. This species is characterized by its great strength and territorial aggressiveness as well as its powerful venom. Within the species, the brown colored abdomen is dominant to the recessive black colored abdomen. Throughout the study of these arachnids, scientific research also found that hairy legs is dominant to hairless legs in this species. During the mating season, a brown, hairy male spider mates with a black, hairless female. In the F1 generation, all of the progeny are brown and hairy. When the progeny of this generation is able to reproduce, a male spider of the F1 generation mates with a black, hairless female. When the resulting progeny are observed for these two traits, 180 are brown and hairy, 185 are brown and hairless, 188 are black and hairy, and 182 are black and hairless. What are the genotypes of the two original parents
Answers
Answer and Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files.
In the image is the blood hypertonic, isotonic, or hypotonic compared
to the matrix of the brain?
Answers
Answer:
Hypotonic
Explanation:
there is less concentration in the blood compared to the brain
Answer:
Hypotonic
Explanation:
the blood is hypotonic compared to the matrix of the brain because it has less solutes than the matrix
when the people swalo the gum what will happen in digestion?
Answers
Answer:
If you swallow gum, it's true that your body can't digest it. But the gum doesn't stay in your stomach. It moves relatively intact through your digestive system and is excreted in your stool.
How would the population of this type of plant be affected if the bee
population decreased dramatically?
A. Because the plants depend on the bees as a food source, the plant
population would decrease.
B. Because the plant would not reproduce as effectively, the plant
population would decrease.
C. Because the two organisms are of different species, the plant
population would be unaffected by the change in the bee
population.
D. Because the bees would no longer prey on the flowers, the plant
population would increase.
Answers
Answer:
Option B - because bee act as a medium for the plant for fertilisation due to which plant reproduce but if the population of bee decrease this will affect the rate of reproduction in plants.
The population of this particular type of plant be affected if the bee population decreased dramatically because the plant would not reproduce as effectively, and the plant population would decrease. Thus, the correct option is B.
What is Population?A Population may be defined as the group of individuals belonging to the same species living in the same area at a given time. This represents the members of the same species in a definite area.
The population of bees is significantly necessary for mediating the process of pollination that involves the mechanism of sexual reproduction in plants.
But if the population of bees is reduced due to any factor, this plant does not undergo the process of pollination which ultimately leads to the reduction in the population of this plant as well.
Therefore, the correct option for this question is B.
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12. Removing an organism from an ecosystem will have which of the following affects? Select all that apply.
A. Increase in biodiversity
B. Decrease in biodiversity
C. Increase in the overall health of the ecosystem
D. Decrease in the overall health of the ecosystem
Answers
Answer:
B and D
Explanation:
Biodiversity comes from having multiple types of organisms. This also allows different organisms to eat and create nutrients that is needed by all other organisms in the ecosystem.
if an earthworm is 18mm long and is photographed and the picture is magnified 2.5x how long will it be in the picture?
Answers
Answer:
The earthworm will be 45 mm long in the picture
Explanation:
From the problem, we can take the original size of the earthworm to be 18mm.
Magnification can be obtained using the formula:
magnification = observed size/ original size.
Recall, we are given that the magnification is 2.5.
Hence, can evaluate the size in the picture to be
2.5 X 18mm = 45mm
Soils in different regions differ based on the _______.
a.
local climate
b.
topography of the land
c.
native organisms
d.
all of the above
Answers
Answer:
I think the answer should be local climate
Answer:
i think it's D.
Explanation:
because i just want to do an anser on this thing
How is the organism that receives the DNA with the code for the desired trait
described?
1.genetically modified
2.the receiver organism
3.the strongest organism
Answers
Which of the following is an example of static friction A.a pencil rolling on the table B. a dog running in a yard C. a chair sliding on a floor D. a mover pushing on a non moving box
Answers
Answer:
d :)
Explanation:
List all six stages of the sensory pathway when an animal responds to information about its environment.
Answers
Explanation:
There basically four stages of sensory pathway when an animal responds to information about its environment.
and these stages of pathway are Reception, transduction, transmission, and perception.
The sensory receptors are commonly described as specialised neurons found in sense organs that helps detect and respond to stimuli. The six stages of the sensory pathway which an animal responds to information about its environment are:
Reception: This falla under sensation. It is simply a type of sensory receptors detect that stimulus is present.Transduction: This also falls under sensation. It is a type of sensory receptors whose work is mainly to convert stimulus energy into electrochemical energy.Transmission: This falls under sensation. It is when neural impulses leave sensory organs and moves to the brain.selection: This falls under perception. It acts as detectors that filter the stimuli by responding to particular features of a stimulus while also ignoring the rest.Organisation: This falls under perception: It is known to organise the characteristics of sensory stimuli in a meaningful manner. Interpretation: This Fall also under perception. It is known to give meaning to sensory stimuli.Sensation is simply regarded as a physiological process that uses sensory receptors in detecting and responding to stimuli.
Perception is referred to as the mental work of organising and interpreting sensory stimuli, making it meaningful.
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Match each stem or root to its description.
Fibrous
Herbaceous
Taproot
Woody
Answers
Can anyone answer this question?
Answers
Answer:
D, sperm contains only 23 (to be combined with the egg which has 23 chromosomes too)
1 pts
What is the function/job of the nucleus?
Tir
Att
58
o Contain the green chlorophyll and make food for the cells by photosynthesis.
o Outside layer of the cell-responsible for determining what enters and exits the cell.
Thin, tube-like structures that provide support and shape for the cell.
The control center for the cell which contains the DNA of eukaryotic cells.
Next
DLL
Answers
Function/Job of nucleus:
Controls and regulates the activities of the cell and carries the genes, structures that contain the hereditary information.
Contains the green chlorophyll and make food for the cells by photosynthesis:
Plants
Outside layer of the cell-responsible for determining what enters and exits the cell:
Cell or Plasma Membrane
Thin, tube-like structures that provide support and shape for the cell:
Microtubules
The control center for the cell which contains the DNA of eukaryotic cells:
Nucleus
With the help of circulatory it produce blood cells.
A. Excretory
B. Muscular
C. Endocrine
D. Skeletal
Answers
Answer:
Skeletal
Explanation:
Think about the bone marrow.
Answer:
D. Skeletal
Explanation:
blood cells are formed in the red bone marrow of bones. Stem cells in the red bone marrow are called hemocytoblasts. They give rise to all of the formed elements in blood. If a stem cell commits to becoming a cell called a proerythroblast, it will develop into a new red blood cell.
name the three major parts of a cell and their functions
Answers
Answer:
cell membrane cytoplasm nucleus
Explanation:
cell membrane controls what goes inside and out the cell
cytoplasm is where chemical reactions happen
nucleus contains genetic information and controls what happens inside the cell
I NEED HELP PLZ ITS DUE TODAY. The sun produces a great amount of energy with sound and lights. We enjoy the sun's light and heat waves on Earth, but cannot hear any sound of the sun. Explain this phenomenon in terms of mechanical waves and electromagnetic waves. (10 Points)
Answers
Answer:
See explanation
Explanation:
First of all, we have to know the difference between a mechanical wave and an electromagnetic wave.
A mechanical wave requires a material medium for propagation. It does not travel through space. An electromagnetic wave does not require a material medium for propagation and it can travel through space.
Light and heat are electromagnetic waves. They both belong to the electromagnetic spectrum. On the other hand, sound is a mechanical wave.
While heat and light can travel through space, sound can not because it is a mechanical wave. Sound has to pass through gas molecules and there is no gas in outer space.
Hence, we enjoy the sun's light and heat waves on Earth, but cannot hear any sound of the sun.
How much of the world does the tropical rainforest biome currently cover?
Answers
Answer:
13 percent
Explanation:
Describe the appearance of the tracing.
Answers
Answer:
The physical appearance of a person is how other individuals see and perceive them. It is one of the main components of non-verbal communication.
- Which occurrence is the result of the cell cycle in unicellular organisms?
A. cell repair
B. cell growth
C. cell replacement
D. cell reproduction
Answers
Answer:
D
Explanation:
Cell reproduction is the result of the cell cycle in unicellular organisms. The correct option is D.
What is cell reproduction?Cells split to produce multiple cells with similar, if not identical, contents. This process is known as cellular reproduction.
Nuclear division during mitosis produces two somatic cells that are genetically identical to the parent cell and have the same genetic complement.
Asexual reproduction in prokaryotes takes the form of cell division in unicellular organisms.
When an organism splits in half, it creates two totally distinct daughter cells, a process known as binary fission. The daughter cells are identical to the parent cells genetically.
Most of the time, Paramecium reproduces asexually via budding, however in poor circumstances, they produce sexually.
Unicellular organisms have a variety of asexual reproduction strategies, including multiple fission, fragmentation, and budding.
Thus, the correct option is D.
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how do the rates of photosynthesis change with the physical environment?
Answers
Answer:
Without enough light, a plant cannot photosynthesis very quickly - even if there is plenty of water and carbon dioxide and a suitable temperature. Increasing the light intensity increases the rate of photosynthesis, until some other factor - a limiting factor - becomes in short supply.
Explanation: